Following successive food poisoning outbreaks last year, Chipotle is closing its stores for a few hours next month to talk about food safety. Chris Arnold, the company’s spokesman, said the meeting would happen Feb. 8 and involve all staff. A range of issues will be covered. “We want to thank our teams for all of their hard work, to discuss some of the changes we are making to enhance food safety, to talk about the restaurants role in all of that and to answer questions from employees,” he said in an email.